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1. |
The novalak – acid system needs what temperature conditions?$ |
A. | 15°C – 25°C |
B. | 25°C – 35°C |
C. | 35°C – 45°C |
D. | 45°C – 55°C |
Answer» D. 45¬¨¬®‚Äö√†√ªC ‚Äö√Ñ√∂‚àö√ë‚àö¬® 55¬¨¬®‚Äö√†√ªC | |